Dynamo-electric machine.



K. SULZBERGER.

DYNAMO BLEUTRIC MACHINE.

APPLICIATION rum) 1:30.12, 1906.

Patented Oct. 27, 1908.

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DYNAMO ELEUTRIU MACHINE.

APPLIOATION FILED DEO.12, 1006.

902,020. Patented Oct. 27, 1908.

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W W /%r AW UNITED STATES PATENT OFFICE.

COMPANY, A CORPORATION OF NEW YURK.

DYNAMO-ELEOTBIC' MACHINE Specification of Letters Patent.

Patented Oct. 27, 1908.

Application filed December 12, 1906. Serial No. 847,463.

To all whom it may concern:

Be it known that I, KARL SuLzcnaonn, a citizen of Switzerland, residing at Charlottnburg, Germany, have invented certain new and useful Improvements in Dynamo- Electric Machines, of which the .following is a specification.

My present invention relates to the construction of dynamo-electric machines, and more particularly to the construction of the I magnet shown in Figs. l and 2, may be re Fouled as cylindrical in form with two simiar diametrically-op osed integral central 1 polar pro'ections 3. In this form of my inl vention t e shaft 1, core bodv 2, rojections 3 are integral. The outer surace of the core between the polar projections I has formed in it a series of undercut grooves or slots 4 which extend parallel to the axis of the shaft 1.

and polar rotating members of dynamo electric ma- 1 The windinfs for the field magnet comhin prise two simi ar sets of conductors, each in One object of my invention is the producthe form of three loops or coils 5, 6 and 7, tion of a construction in which formed one set surrounding each polar pro'ection. coils may be positively but removably se- The coils 5, 6 and Tare secured in ace by cured to the rotating member even when the 5 two diametrically-opposed sets of coil or conopposite turns of coils are separated by 5 ductor holders 8 and four similar sets of coil many degrees of arc. 0

Another object obtained with 111 Y construction in some cases, is the production of a rotating member having distributed windings and definite polar properties. This object of my invention I may obtain, same time I produce a rotating member hav in a smooth external surface.

lhe embodiments of my invention which I have hereinafter described and illustrated also possesses many advantageous features 5 of construction, which are pointed out with particularity in the claims annexed to and j forming apart of this specification.

For a better understandin of my invention reference may be had to t is accomlpanyhave E illustrated and described embodiments of ing description and drawings in which my invention.

Of the drawings, Figure 1 is an elevation of the rotalin machine em odying my invention with parts broken away and in section on the line I 1 of Fig. '2; Fig. 2 is an end elevation of the construction shown in Fi l with parts broken awn and in section; to ig. 2 'showin a modified construction; Fig. 4 is a partia plan view illustrating the manner in which the coil retaining blocks are secured in place Fi 5 is a pore ctive view of a laminated coil retaining lock which may he em loyed and Fig. 6 is a partial end elevation il ustrating another modification.

In the vention w 1 represents the shaft carrying the rotating two-polo field magnetof a dynamo electric machine. The core 2 proper of the field while atthe member of a dynamo-electric ig. 3 is a view similar particular embodiments of my inl ich I have shown in the drawings,

I or conductor holders 9. The various coil 1 holders or conductor-securing devices each consist of a short block of the general shape shown in Fig. 5 having a tcnon or projection which cntcrs the corres onding undercut groove or slot 4. The ho dcrs 8 are located midway between the polar projections 3, and one set of holders 9 is located between each polar tprojcction 3 and each sup ort 8. Each set 0 holders 9 comprises t \ree rows of blocks-one row between the corresponding polar rejection and the adjacent side of the coil 7; one row between the adja- Icent sides of the coils 7 and 6; and one row between the adjacent sides of the coils 5 and 6.

In assembling the windings on the core the windings are placed upon the core body with each coil side restin on the appropriate ribs between the ends oithc coils 5, 6 and 7 and projecting beyond the end of the core a distance equal to or rcater than the thickness 5 of each block 9. radially in the space between the end of the core and the inner end of the end connections of the coils and then moved axially into place i in the slots 4. 'lhismcthod of assembling is indicated in Fig. 4. The blocks may be secured in place before or alter the coils are upon the core body. The blocks 8 and 9 may be locked in the slots 4 in any suitable manner; for instance, in channels formed at the bottoms of the slots 4 in the core body.

Instead of formin Y the core body of solid material as indicator in Fi s. l and 2, it may comprise a laminated shell! as indicated in Fig. 3, which is secured in any suitable man- A ner directly to the shaft 1 or to a shell or he blocks 9 are inserted spider member carried by it. o

in this form l nny invention the polar portions 3 corrc i tweenadjaecntcoilsupportsandthocorobody spending to the polar portions 3 of the coustruetion shown in Figs. 1 and 2, are composed of blocks of laminated material socured to the core body in the same manner as the coil holders 8 and 9. In this form of my invention the core badly may be cylindrical with a series of cone y spaced under cutslots formed in its outer surface into which the coil holders and blocks forming the central olar portion 3 are TBCtZlVtEd. In Fig. 3 tile portion of the core within each inner coil 7 comprises two outer sets of blocks 11 each havin its side adjacent the conductors shaped lilze the sides of the coil holders 8 and 9, and its 0 ositc sides radial, and two inner sets of blocks 12 having radial sides.

In all forms of my invention the coil holders S and 9 may be formed of lamina riveted to ether as indicated in Fig. 5. The coil holders 8 and 9 shown in Figs. l 5 inclusive, are so shaped that when inserted 1n place the core and coil holders form a cylindrical body pierced by a number of longitudinally ex tending coil receivin passa es which are parallel to the axis of t e sha t 2, and are substantially rectangular in shape.

The core body and the polar projections are of course formed of magnetic material and the coil holders 8 and 9 ma also be formed of magnetic material, alt ough in some cases part of the coil holders may be tageous arrangement consists in forming the coil holders 8 of non-magnetic material such as phosphor bronze and all of the coil holders 9 of magnetic material. This arrangement insures that the field magnet shall have sharply defined polar properties.

In the construction shown in Fig. 1, the end portions of the windings rest on a cylindrica-l supporti surface 13 concentric with and earned by t e shaft 1. The ends of the windings may be firmly secured a ainstthe support by a layer of wire 14. I f desired, blocks or wedges ma be inserted in the s aces in the bends of t e coils or parts of the istributed windings and between the ends of the olar pro'ectlons and the windings. It will of course e understood that the con doctors are surrounded by suitable insulatin material. Each set of coils may be to or together as shown at 15 in Fig. 1. A on lar member 16 carried by the extension or support which ma be shrunk in place, is provided with a a "e portion 16 which extends over the cm of the indie to the ends of the core body 2. The fan e 16 serves as a protecting shield or cover or the ends of the windin Suitable connections 17 are established tween the windi s and collector rings 18 mounted on the she. t.

' of the exact shapoof the windings asin the coli struetion shown in Figs. 1 lo 4 inclusive, the passages may be made larger and of dill'cront shape than the windings, as shown in Fig. (i, in which case, wedges 19 are driven into the spaces above the conductors to lock the whole firmly together.

Features of m invention shown and described but not c aimed herein are claimed in my prior application Serial No. 254,461, filed April 8, 1905. It will be obvious to all those skilled in the art that certain features of my invention ma Y be used without a correspondi a use of 01; iers. Those skilled in the art wi 1 also recognize that changes may be made in the form of my invention without departing from its spirit, and I do not wish the claims hereina ter made to be limited to the particular construction shown more than is made necessary by the state of the art.

What I claim as new and desire to secure by Letters Patent of the United States, is,

1. In combination, a core having an axially extending undercut slot or roovc formed in its surface, conductors {armed into a loop or coil applied thereto and proportioned so that a space extends between one end of said slot and the inner surface of one end of said loop or coil, and a conductor holder having a tenon fitted to said slot, radially inserted into said space and then moved i axiallf' into said slot. made of magnetic material, while others are l 2. made of non-magnetuc material. An advann a dynamo electric machine, a sub stantially cylindrical core body, a formed coil applied thereto and proportioned so that a s ace extends between one end of the core bo y and the inner surface of one end of said coil, and coil holders secured to said bod by tongue and slot connections, said coil ho ders being formed in sections or units which are Ipassed one at a time radially into said a ace etween the end of the coil and the end 0 the core body and are then moved axially to bring about the tongue and slot engagement between the unit and the body.

3. In combination, a core, a winding therefor, holders or securing devices for the winding dovetailed to the core and and connections for the windin spaced away from the end of said core, saii holders being made in the form of short blocks or units to first allow of their insertion radially into the space between the end connections and the end of the core and their subsequent. axial movement to bring about the dove-tailed connection between the blocks and the core.

4. In combination, a rotatio core body rovidcd with a number of parallel ribs, ada jacent ribs being separated by undercut grooves, conductors resting on said ribs, and a plurality of short blocks entering each groove, each block having a tcnon entering he groove, and portions overhanging the conductors resting on the ribs at opposite sides of the grooves, the outerends ot different blocks being 0 ui-distant from the axis of rotation, and en connections for the conductors spaced away from the end of the core body, whereby the blocks may be inserted one at a time into the end of the proper groove.

5. In combination, a core body provided witha number of parallel ribs, adjacent ribs being separated by undercut grooves, conductors resting on said ribs, and a pluralit of blocks entering each groove, each bloc having a tenon engaging the ribs at opposite sides of the groove and portions overhangin r the conductors resting on adjacent ribs, ant end connections for the windings spaced away from the end of the core: body a dis tance not less than the axial length of a block whereby the blocks may be inserted one at a time into the end of the proper groove.

6. In combination, a core body provided with a number of axially extending ribs, the sides of which are undercut, a coil part rest- .ing on each rib, retaining dex ices therefor each having a tenon portion engaging adjacent sides of adjacent ribs, a portion separating the coil parts resting on said adjacent ribs, and other portions overhanging the coil parts resting on said ribs, and a lockingdevice enga ing the coil part resting on each rib and t 1e retaining devices at opposite sides thereof.

7. In a dynamo electric machine, a rotatin member comprising a core having a plura ity of central polar portions, a portion at each side of each polar portion provided with a number of axially extending ribs, adjacent ribs being se arated by undercut grooves, a distributed winding surrounding each of said polar portions and comprising parts resting one on top of each of said ribs, and a plurality of blocks entering each groove, each block having a tenon engaging the adjacent ribs and portions overhanging the conductors resting thereon, and end connections for the windings spaced away from the end of the core, whereby the blocks may be inserted one at a time into the end of the proper groove:

8. In a dynamo electric machine, a rotatmg member comprisingh. core having a plura ity of central polar portions, a portion at each side of each olar portion provided with a number of axiall Y extending ribs, adjacent ribs being separated by undercut grooves, a distributed winding surrounding each of said polar portions and comprising parts resting one on top of each of said ribs, a plurality of blocks entering each groove, each block having a tenon engaging the adjacent ribs and portions overhanging the conductors resting thereon, the outer ends of said blocks and of said polar portions being equidistant from l the axis of rotation, and end connections for i the windings spaced away from the end of l the core, whereby the blocks may be inserted one at a time into. the end of the proper groove.

9. In a dynamo electric machine, a rotatl ing member comprising a core having a plurality of central polar portions, a portion at each side of each olar portion providedwith a number of axially extending ribs, adjacent ribs being separated by undercut grooves, a distributed winding surrounding each of said polar portions and comprising parts resting one on top of each of said ribs, and a plurality of blocks entering each groove, each block having a tenonen aging the adjacent ribs and portions over anging the conductors resting thereon, said blocks being passed ra-' dially between the end of the core body and the and connections of the winding into position to enter the ends of the proper slots.

10. In combination, a core body provided with a number of parallel ribs the sides of which'are undercut, a coil part resting on each rib, retaining devices for the coil arts, each having a tenon portion engaging t 1e adj acent sides of adjacent ribs, a portion separating the coil parts resting on said ad'acent ribs, and other portions overhanging the coil parts resting on said adjacent ribs, and wedge locking means engaging the outer surface of each coil part and the retaining devices at opposite sides thereof.

ll. In combination, a core com risin a drical portion bein provided with a plurality of ribs separated y undercut grooves, conductor parts resting on the tops of the ribs, a plurality of coil retaining devices for each groove, each device having a tenon which enters the corresponding groove and portions which overhang the conductors resting on the ribs at the side of the grooves, and end connections for the conductor parts spaced away from the end of the core, whereby the said coil retaining devices may be inserted one at a time into the end of the proper groove.

12. In combination, a core body provided with a number of axially extending ribs and under cut grooves, a coil part resting on each rib, retaining devices for the coil parts, each having a tenon portion engaging the under cut groove, a portion separating the coil parts resting on said adjacent ribs and other portions overhan ing and engaging the outer surface of the coi parts resting on said adjacent ribs and retaining said coil arts in position, and end connections for t 10 coil parts spaced away from the core body, whereby the retaining devices for the core parts may be inserted into the end of the ropcr groove.

13. In combination, a core ody provided with a number of axially extending ribs and under cut grooves, a coil part resting on each rib, retaining evices for the coil arts, each i In witness whereof, I have hereunto set consisting of a plurality of blocks aving teni my hand this 17th day of November, 1906. one entering the under cut grooves, and end K ALRL SULZBERGER connections for the Windin s spaced away i 5 from the end of the core bofiy, whereby the W'itnesses:

blocks may be inserted one at a time into the MAX HAMBURGER, end of the proper groove. JULIUS RUMLAUS. 

